CODEWITHSUNDEEP
c++for-loop
Jake
Jake

Reputation: 31

use for loop int declaration to open multiple files

I've done some searching here but I think I can't articulate what i'm looking for so here's my post:

I've got multiple files with similar names that I want to open and display in my console one after the other. These files are ascii images that when displayed in order create an animation

the file names are:

I want to use the 'int' declaration in the for loop to open the next file in the list every time the loop executes

Hopefully the code below makes sense - Can i partially complete a file name using the for loops int declaration? Is there an alternative?

void animate2() {

for (int x = 1; x < 5; x++) {

    ifstream animation("8ballanimation//8ball<<x<<.txt");

    while (!animation.eof())
    {
        string displayFile;
        getline(animation, displayFile);
        cout << displayFile << endl;

    }
    animation.close();
    Sleep(150);
    system("CLS");
}

}

Upvotes: 0

Views: 2170

Answers (2)

A.S.H
A.S.H

Reputation: 29332

"8ballanimation//8ball<<x<<.txt" does not make sense. Also, avoid using .eof(), check completion by the return of getline.

void animate2() {
    for (int x = 1; x < 5; x++) {
        stringstream ss;
        ss << "8ballanimation" << x << ".txt";
        ifstream animation(ss.str());
        string line;
        while (getline(animation, line))
            cout << line << "\n";
        animation.close();
        Sleep(150);
        system("CLS");
    }
}

Upvotes: 3

vincentp
vincentp

Reputation: 1433

With C++11 you have std::to_string.

for (int i = 1; i <= 4; i++) {
  std::string path = "8ball" + std::to_string(i) + ".txt";
  std::ifstream animation(path);
  // Do what you want
}

Upvotes: 2

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